{"id":42171,"date":"2023-11-15T07:50:00","date_gmt":"2023-05-01T08:23:50","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql-11%e5%8d%b3%e5%b0%86%e5%88%b0%e6%9d%a5%ef%bc%811-%e5%8f%82%e6%95%b0%e7%9a%84%e5%b7%ae%e5%bc%82\/"},"modified":"2024-05-04T09:09:31","modified_gmt":"2024-05-04T01:09:31","slug":"postgresql-11%e5%8d%b3%e5%b0%86%e5%88%b0%e6%9d%a5%ef%bc%811-%e5%8f%82%e6%95%b0%e7%9a%84%e5%b7%ae%e5%bc%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql-11%e5%8d%b3%e5%b0%86%e5%88%b0%e6%9d%a5%ef%bc%811-%e5%8f%82%e6%95%b0%e7%9a%84%e5%b7%ae%e5%bc%82\/","title":{"rendered":"PostgreSQL 11\u5373\u5c06\u5230\u6765\uff01(1) &#8211; \u53c2\u6570\u7684\u5dee\u5f02"},"content":{"rendered":"<h2>\u9996\u5148<\/h2>\n<p>\u55b5\u3002<\/p>\n<p>\u56e0\u4e3a\u57285\/24\u53d1\u5e03\u4e86PostgreSQL 11\u7684beta1\u7248\u672c\uff0c\u6240\u4ee5\u6211\u51b3\u5b9a\u7acb\u5373\u5f00\u59cb\u8c03\u67e5\u4e00\u4e0b\u5173\u4e8ePostgreSQL 11\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u867d\u7136\u6709\u5f88\u591a\u4ee4\u4eba\u5173\u6ce8\u7684\u529f\u80fd\u6dfb\u52a0\uff0c\u4f46\u9996\u5148\u6211\u4eec\u6765\u770b\u4e00\u4e0bPostgreSQL\u7684\u914d\u7f6e\u53c2\u6570\u7684\u5dee\u5f02\u3002<\/p>\n<h2>\u7b80\u8981\u8bf4\u660e<\/h2>\n<p>\u4ee5\u4e0b\u662f PostgreSQL 10 \u548c PostgreSQL 11 \u53c2\u6570\u5dee\u5f02\u7684\u6982\u8981\u3002<\/p>\n<div>\n<div class=\"post-table\">\u7a2e\u5225\u500b\u6570PostgreSQL 11\u3067\u8ffd\u52a0\u3055\u308c\u305f\u30d1\u30e9\u30e1\u30fc\u30bf21PostgreSQL 11\u3067\u5909\u66f4\u3055\u308c\u305f\u30d1\u30e9\u30e1\u30fc\u30bf1PostgreSQL 11\u3067\u524a\u9664\u3055\u308c\u305f\u30d1\u30e9\u30e1\u30fc\u30bf1<\/div>\n<\/div>\n<p>\u7531\u4e8e\u4ecd\u5904\u4e8ebeta1\u9636\u6bb5\uff0c\u6240\u4ee5\u672a\u6765\u53ef\u80fd\u4f1a\u6709\u66f4\u591a\u7684\u53d8\u66f4\uff0c\u4e0d\u8fc7\u5927\u90e8\u5206\u4f3c\u4e4e\u662f\u589e\u52a0\u53c2\u6570\u3002<\/p>\n<h2>\u5728 PostgreSQL 11 \u4e2d\u65b0\u589e\u7684\u53c2\u6570\u3002<\/h2>\n<div>\n<div class=\"post-table\">\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u30e1\u30e2data_directory_modeUnix\u7cfb\u30b7\u30b9\u30c6\u30e0\u3067\u306e\u30c7\u30fc\u30bf\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u6a29\u9650\u3002\u3053\u306e\u8a2d\u5b9a\u5024\u306finitdb\u6642\u306b <code>--allow-group-access<\/code>\u3067\u6307\u5b9a\u3059\u308b\u3002<br \/>\n\u5f93\u6765\u306f 700 \u306e\u6a29\u9650\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u304b\u3063\u305f\u3002enable_parallel_append11\u304b\u3089paralell append\u304c\u5bfe\u5fdc\u3059\u308b\u3063\u307d\u3044\uff1f<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306fon\u3002<br \/>\n\u3053\u308c\u3092off\u306b\u3057\u305f\u307b\u3046\u304c\u5b9f\u884c\u6642\u9593\u304c\u77ed\u304f\u306a\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308b\u306e\u3060\u308d\u3046\u306a\u3042\u3002enable_parallel_hash\u3053\u3063\u3061\u306fparalell hash join\u306e\u6709\u52b9\/\u7121\u52b9\u306e\u30d5\u30e9\u30b0\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306fon\u3002<br \/>\nenable_hash_join\u304c\u7121\u52b9\u3060\u3068\u3001\u3082\u3061\u308d\u3093\u3053\u3044\u3064\u3082\u7121\u52b9\u3002enable_partition_pruning\u3053\u308c\u304c\u6709\u52b9\u3060\u3068\u3001\u5b9f\u884c\u8a08\u753b\u751f\u6210\u6642\u70b9\u3067\u691c\u7d22\u5bfe\u8c61\u5916\u3068\u306a\u308b\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3092\u9664\u5916\u3059\u308b\u306e\u304b\u306a\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306fon\u3002enable_partitionwise_aggregate\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u5358\u4f4d\u306e\u30b0\u30eb\u30fc\u30d7\u5316\u30fb\u96c6\u8a08\u3092\u6709\u52b9\u307e\u305f\u306f\u7121\u52b9\u306b\u3059\u308b\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306foff\u3002<br \/>\n\u3053\u308c\u3092on\u306b\u3059\u308b\u3068\u5b9f\u884c\u8a08\u753b\u751f\u6210\u6642\u306bCPU\u3068\u30e1\u30e2\u30ea\u3092\u7d50\u69cb\u55b0\u3046\u304b\u3089\u30c7\u30d5\u30a9\u30eb\u30c8\u306foff\u306b\u306a\u3063\u3066\u308b\u307d\u3044\u3002enable_partitionwise_join\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u5358\u4f4d\u306e\u7d50\u5408\u3092\u6709\u52b9\u307e\u305f\u306f\u7121\u52b9\u306b\u3059\u308b\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306foff\u3002<br \/>\n\u6709\u52b9\u306a\u30b1\u30fc\u30b9\u304c\u7d50\u69cb\u9650\u5b9a\u3055\u308c\u3066\u3066\u3001\u304b\u3064\u3001\u3053\u308c\u3092on\u306b\u3059\u308b\u3068\u5b9f\u884c\u8a08\u753b\u751f\u6210\u6642\u306bCPU\u3068\u30e1\u30e2\u30ea\u3092\u7d50\u69cb\u55b0\u3046\u304b\u3089\u30c7\u30d5\u30a9\u30eb\u30c8\u306foff\u306b\u306a\u3063\u3066\u308b\u307d\u3044\u3002jitJIT(Just-in-Time Compilation)\u3092PostgreSQL\u3067\u4f7f\u7528\u3059\u308b\u304b\u3069\u3046\u304b\u306e\u30d5\u30e9\u30b0\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306fon\u3002jit_above_costJIT\u30b3\u30f3\u30d1\u30a4\u30eb\u3092\u4f7f\u3046\u304b\u3069\u3046\u304b\u306e\u95be\u5024\uff1f<br \/>\n\u306a\u3093\u3068\u306a\u304f\u3001JIT\u30b3\u30f3\u30d1\u30a4\u30eb\u306f\u6642\u9593\u304c\u304b\u304b\u308b\u3051\u3069\u3001\u305d\u308c\u3092\u4f7f\u3063\u305f\u30af\u30a8\u30ea\u306f\u9ad8\u901f\u306b\u5b9f\u884c\u3067\u304d\u308b\u306e\u3060\u3068\u601d\u3046\u306e\u3067\u3001\u3053\u3053\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u8abf\u6574\u304c\u809d\u306b\u306a\u308b\u306e\u304b\u306a\u3042\uff1f<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306f100000\u3002\u3053\u306e\u6570\u5024\u306e\u5358\u4f4d\u3063\u3066\u306a\u3093\u3060\u308d\uff1fjit_debugging_supportPostgreSQL\u958b\u767a\u8005\u5411\u3051\u30aa\u30d7\u30b7\u30e7\u30f3\u3002<br \/>\n\u3053\u308c\u3092on\u306b\u3059\u308b\u3068\u3001JIT\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u751f\u6210\u3055\u308c\u305f\u95a2\u6570\u3092gdb\u306b\u767b\u9332\u3067\u304d\u308b\u3063\u307d\u3044\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306foff\u3002jit_dump_bitcodePostgreSQL\u958b\u767a\u8005\u5411\u3051\u30aa\u30d7\u30b7\u30e7\u30f3\u3002<br \/>\nJIT\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u751f\u6210\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u30c0\u30f3\u30d7\u3057\u3066\u304f\u308c\u308b\u3082\u306e\u304b\u306a\uff1f<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306foff\u3002jit_expressionsPostgreSQL\u958b\u767a\u8005\u5411\u3051\u30aa\u30d7\u30b7\u30e7\u30f3\u3002<br \/>\n\u30b3\u30b9\u30c8\u8a08\u7b97\u306e\u5bfe\u8c61\u3068\u306a\u308b\u5f0f\u3092JIT\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u30fb\u30fb\u30fb\u3068Google\u7ffb\u8a33\u5148\u751f\u306f\u8a00\u3063\u3066\u308b\u304c\u3001\u6b63\u76f4\u3001\u610f\u5473\u304c\u3088\u304f\u308f\u304b\u3089\u306c\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306fon\u3002jit_inline_above_costJIT\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u30b3\u30fc\u30c9\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u306b\u95a2\u3059\u308b\u30d1\u30e9\u30e1\u30fc\u30bf\uff1f<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306f500000\u3002jit_optimize_above_costjit_above_cost\u3068\u30bb\u30c3\u30c8\u3067\u8abf\u6574\u3059\u308b\u3082\u306e\u3063\u307d\u3044\uff1f<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306f500000\u3002jit_profiling_supportPostgreSQL\u958b\u767a\u8005\u5411\u3051\u30aa\u30d7\u30b7\u30e7\u30f3\u3002<br \/>\nJIT\u306b\u3088\u3063\u3066\u751f\u6210\u3055\u308c\u305fperf to profile\u95a2\u6570\u3092\u8a31\u53ef\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3092\u51fa\u529b\u3059\u308b\u3002<br \/>\nPerf\u89e3\u6790\u3082\u898b\u636e\u3048\u305f\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u308b\u306e\u306a\u3042\u3002jit_provider\u3069\u306eJIT\u30d7\u30ed\u30d0\u30a4\u30c0\u3092\u4f7f\u7528\u3059\u308b\u304b\u6307\u5b9a\u3059\u308b\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306fllvmjit\u3002jit_tuple_deformingPostgreSQL\u958b\u767a\u8005\u5411\u3051\u30aa\u30d7\u30b7\u30e7\u30f3\u3002<br \/>\n\u30b3\u30b9\u30c8\u8a08\u7b97\u306e\u6c7a\u5b9a\u306b\u5f93\u3044\u3001\u30bf\u30d7\u30eb\u5909\u5f62\u304cJIT\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306fon\u3002<br \/>\n\u30bf\u30d7\u30eb\u5909\u5f62(tuple deforming)\u3063\u3066\u306a\u3093\u3060\u308d\u3046\u30fb\u30fb\u30fb\uff1fmax_parallel_maintenance_workers1\u3064\u306e\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30b3\u30de\u30f3\u30c9\u304b\u3089\u8d77\u52d5\u3067\u304d\u308b\u4e26\u5217\u30ef\u30fc\u30ab\u30fc\u6570\u306e\u6700\u5927\u5024\u3002<br \/>\n\u73fe\u72b6(PostgreSQL 11)\u3067\u306f\u3001btree\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u6307\u5b9a\u6642\u306e<code>CREATE INDEX<\/code>\u30b3\u30de\u30f3\u30c9\u306e\u307f\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306f2\u3002parallel_leader_participation\u30ea\u30fc\u30c0\u30fc\u30d7\u30ed\u30bb\u30b9\u304c\u30ef\u30fc\u30ab\u30fc\u30d7\u30ed\u30bb\u30b9\u3092\u5f85\u3064\u306e\u3067\u306f\u306a\u304f\u3001\u30ae\u30e3\u30b6\u30fc\u3068\u30ae\u30e3\u30b6\u30fc\u30de\u30fc\u30b8\u30ce\u30fc\u30c9\u3067\u30af\u30a8\u30ea\u30d7\u30e9\u30f3\u3092\u5b9f\u884c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306fon\u3002<br \/>\n\u3053\u308c\u306eon\/off\u3067\u6027\u80fd\u5dee\u304c\u3069\u306e\u304f\u3089\u3044\u51fa\u308b\u3093\u3060\u308d\u3046\u306a\u3042\u30fb\u30fb\u30fb\u3002ssl_passphrase_command\u975e\u516c\u958b\u9375\u306a\u3069\u306eSSL\u30d5\u30a1\u30a4\u30eb\u3092\u89e3\u8aad\u3059\u308b\u305f\u3081\u306e\u30d1\u30b9\u30d5\u30ec\u30fc\u30ba\u3092\u53d6\u5f97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u5916\u90e8\u30b3\u30de\u30f3\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3002\u666e\u901a\u306f\u4f7f\u3046\u5fc5\u8981\u306f\u306a\u3044\u3063\u307d\u3044\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u7a7a\u6587\u5b57\u5217\u3002ssl_passphrase_command_supports_reloadssl_passphrase_command\u3067\u8a2d\u5b9a\u3055\u308c\u305f\u30d1\u30b9\u30d5\u30ec\u30fc\u30ba\u30b3\u30de\u30f3\u30c9\u3092\u30ea\u30ed\u30fc\u30c9(pg_ctl reload\u306e\u3053\u3068\u304b\u306a\uff1f)\u4e2d\u306b\u547c\u3073\u51fa\u3059\u304b\u3069\u3046\u304b\u3092\u6307\u5b9a\u3059\u308b\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306foff\u3002vacuum_cleanup_index_scale_factorVACUUM\u6642\u306b\u3001\u7d22\u5f15\u30b9\u30ad\u30e3\u30f3\u3092\u5b9f\u884c\u305b\u305a\u306b\u633f\u5165\u3067\u304d\u308b\u3001\u524d\u306e\u7d71\u8a08\u53ce\u96c6\u3067\u30ab\u30a6\u30f3\u30c8\u3055\u308c\u305f\u30d2\u30fc\u30d7\u30fb\u30bf\u30d7\u30eb\u306e\u5408\u8a08\u6570\u306e\u5272\u5408\u3092\u6307\u5b9a\u3059\u308b\u3002\u306a\u308b\u307b\u3069\u3001\u308f\u304b\u3089\u3093\u3002<br \/>\n\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306f0.1\u3002<\/div>\n<\/div>\n<h2>\u5728PostgreSQL 11\u4e2d\u66f4\u65b0\u7684\u53c2\u6570<\/h2>\n<div>\n<div class=\"post-table\">\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u30e1\u30e2wal_segment_size\u5358\u4f4d\u304c\u30d6\u30ed\u30c3\u30af\u6570\u3067\u306f\u306a\u304f\u3001\u30d0\u30a4\u30c8\u6570\u306b\u5909\u66f4\u3055\u308c\u305f\u3002<br \/>\n\u305d\u308c\u306b\u3068\u3082\u306a\u3044\u521d\u671f\u8a2d\u5b9a\u5024\u304c2048\u304b\u308916777216\u306b\u5909\u66f4\u3055\u308c\u305f\u3002<\/p>\n<\/div>\n<\/div>\n<h2>\u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9\uff0c\u7528\u4e2d\u6587\u8868\u8ff0\u4ee5\u4e0b\u5185\u5bb9\uff1a<br \/>\n\u5728PostgreSQL 11\u4e2d\u88ab\u5220\u9664\u7684\u53c2\u6570<\/h2>\n<div>\n<div class=\"post-table\">\u30d1\u30e9\u30e1\u30fc\u30bf\u540d\u30e1\u30e2replacement_sort_tuples\u30ea\u30ea\u30fc\u30b9\u30ce\u30fc\u30c8\u3088\u308a\u3002<br \/>\n&#8221; Replacement sorts were determined to be no longer useful.&#8221;<br \/>\n\u8eab\u3082\u84cb\u3082\u306a\u3044\uff57<br 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